How to move non-rotating objects together with the rotating ones on the same axis?
Id make it one whole object and then parent the wheel to the solid objects, everything needs to be parented. You can then use paint weights and constraints to get the different parts to animate correctly with bones/nodes.

Parenting should be some thing like a web tree. This is a over simplification but i think it works.

Hull has no parent, Doors and Mirrors is parented to the hull, Axel is parented to the hull, suspension is parented to the Axel and the wheels are parented to the suspension.